Problems

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Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
0-1 Sequences 12256 1908 16% 0.00 2483 1306 53% 6.4
10 Kinds of People 27700 5631 20% 0.01 4765 3407 72% 5.3
2048 10969 5012 46% 0.00 4886 4157 85% 2.7
2, 4, 6, Greaaat 867 128 15% 0.15 105 42 40% 9.2
3D Printed Statues 14948 6861 46% 0.00 6460 5770 89% 2.2
3D Printer 1025 166 16% 0.00 429 128 30% 8.9
3-Sided Dice 2951 240 8% 0.00 485 168 35% 8.8
4 thought 13014 4460 34% 0.00 4248 3580 84% 2.8
A1 Paper 6909 2084 30% 0.00 2071 1650 80% 3.7
Aa 174 123 71% 0.01 48 34 71% 5.6 - 7.9
Aaah! 37409 17538 47% 0.00 15806 14758 93% 1.5
Abandoned Animal 2666 592 22% 0.03 681 500 73% 5.4
ABC 20679 9367 45% 0.00 8903 8073 91% 1.8
Ab Initio 2187 351 16% 0.08 298 187 63% 7.5
Above Average 13640 5652 41% 0.00 5445 4884 90% 2.2
A+B Problem 9985 989 10% 0.03 1421 470 33% 8.4
A Brief Gerrymander 552 109 20% 0.11 103 50 49% 9.0
Abstract Art 469 155 33% 0.00 131 95 73% 6.5
Abstract Painting 1189 472 40% 0.00 415 336 81% 4.2
Absurdistan Roads II 710 238 34% 0.00 241 158 66% 7.1
Absurdistan Roads III 1866 529 28% 0.02 493 376 76% 5.7
Access Points 541 181 33% 0.01 172 134 78% 5.8
Accounting 2116 589 28% 0.01 534 381 71% 4.4
A Classy Problem 13053 3403 26% 0.01 2962 2309 78% 4.5
ACM Contest Scoring 8731 5445 62% 0.00 4863 4599 95% 1.5
Add 'Em Up! 2763 651 24% 0.01 678 483 71% 5.1
Adding Words 14906 3661 25% 0.00 3430 2685 78% 3.9
Add Two Numbers 5606 3724 66% 0.00 3505 3373 96% 1.3
A Different List Game 7563 524 7% 0.00 1002 192 19% 9.3
A Different Problem 42318 15619 37% 0.00 14286 12367 87% 2.7
Adjoin the Networks 2790 704 25% 0.00 609 485 80% 5.7
Administrative Difficulties 1799 360 20% 0.03 382 260 68% 6.3
Ads 874 92 11% 0.00 170 66 39% 5.1
Advanced Causal Measurements 129 41 32% 0.10 42 32 76% 7.4
Adventure Begins 364 115 32% 0.06 115 87 76% 6.0
Adventures in Moving -- Part IV 1802 403 22% 0.00 348 285 82% 5.0
A Favourable Ending 2167 578 27% 0.00 534 413 77% 4.5
A Feast For Cats 3547 1331 38% 0.00 971 840 87% 3.4
A Flea on a Chessboard 1001 212 21% 0.01 210 150 71% 5.3
A Horse Shoe-In 129 13 10% 0.27 21 9 43% 9.2
AI Jeopardy 600 80 13% 0.02 79 52 66% 6.3
Air Conditioned Minions 7476 2196 29% 0.00 2194 1693 77% 3.9
Airline Hub 2372 526 22% 0.01 472 282 60% 6.7
Airport Coffee 1381 281 20% 0.04 260 184 71% 6.8
Airport Construction 3827 476 12% 0.02 421 223 53% 7.9
Airport Logistics 71 19 27% 0.00 25 18 72% 7.0
Airports 683 208 30% 0.11 184 137 74% 5.6
Air Rally 82 0 0% -- 9 0 0% 8.4
Akcija 10640 4795 45% 0.00 4286 3824 89% 2.2
Aladin 884 104 12% 0.10 145 33 23% 8.8
Alchemy 175 34 19% 0.02 45 24 53% 9.0
Alchemy 101 688 214 31% 0.05 196 155 79% 4.0
Alea iacta est 45 16 36% 0.19 20 15 75% 6.6
Alehouse 1054 387 37% 0.02 390 278 71% 5.4
Alex and Barb 1262 439 35% 0.00 514 397 77% 3.5
Alice in the Digital World 6185 1569 25% 0.01 1425 1123 79% 4.2
Alien Codebreaking 317 31 10% 3.23 58 16 28% 8.3
Alien Microwave 249 98 39% 0.00 128 94 73% 6.7
Alien Numbers 3006 1587 53% 0.00 1555 1424 92% 1.9
A List Game 11138 3367 30% 0.00 3246 2746 85% 3.0
All about that base 3389 1344 40% 0.00 1297 1098 85% 3.0
All Different Directions 1743 810 46% 0.00 767 687 90% 2.5
Allergy Test 660 169 26% 0.00 215 107 50% 8.0
All Friends 1171 223 19% 0.00 211 112 53% 8.8
All in the Family 150 34 23% 0.00 49 32 65% 5.9
All is Well 144 38 26% 0.03 37 31 84% 6.2
All Just A Dream 2821 716 25% 0.05 549 419 76% 5.6
All Kill 124 102 82% 0.00 58 51 88% 3.6
Alloys 926 331 36% 0.00 347 287 83% 4.0
All Pairs Shortest Path 14021 2702 19% 0.00 1709 1227 72% 5.8
Almost Perfect 13764 3088 22% 0.00 3155 2509 80% 3.2
Almost Union-Find 10337 1780 17% 0.02 1626 982 60% 6.5
Alphabet 2711 1386 51% 0.00 1320 1120 85% 3.1
Alphabet Animals 8402 1547 18% 0.00 1364 977 72% 6.5
Alphabet Spam 11225 7005 62% 0.00 5957 5730 96% 1.4
Alternating Current 705 687 97% 0.00 120 117 98% 1.4 - 8.3
Alternative Anagram 267 85 32% 0.00 78 56 72% 7.3
Alternative Bracket Notation 240 104 43% 0.00 112 92 82% 5.4
Alto Singing 95 41 43% 0.00 42 39 93% 4.4
Altruistic Amphibians 562 153 27% 0.22 128 94 73% 5.2
Amalgamated Artichokes 5241 2357 45% 0.01 2080 1837 88% 2.6
Amanda Lounges 1952 590 30% 0.03 499 407 82% 5.3
A Mazing! 4048 1050 26% 0.09 411 307 75% 5.5
Amazing Adventures 496 144 29% 0.02 161 116 72% 6.2
Amazing Race 690 167 24% 0.29 151 115 76% 5.5
Ambiguous Result 299 68 23% 0.02 100 63 63% 7.2
Amsterdam Distance 2327 1156 50% 0.00 1170 1004 86% 2.6
A Multiplication Game 1316 540 41% 0.00 581 450 77% 4.3
Anagram Counting 4795 1921 40% 0.00 1856 1561 84% 3.0
Andrew the Ant 528 164 31% 0.05 170 133 78% 4.7
A New Adventure 1552 235 15% 0.00 230 165 72% 5.8
A New Alphabet 14159 6382 45% 0.00 5985 5499 92% 2.0
An I for an Eye 1330 382 29% 0.00 445 329 74% 4.9
Animal Classification 1697 397 23% 0.03 338 226 67% 6.9
An Industrial Spy 2459 1297 53% 0.02 1032 906 88% 3.0
Annoyed Coworkers 585 162 28% 0.03 134 115 86% 4.3
Another Brick in the Wall 4506 2289 51% 0.00 2232 2031 91% 2.1
Another Candies 10656 2973 28% 0.00 2988 2510 84% 2.6
Another Coin Weighing Puzzle 771 209 27% 0.00 146 117 80% 6.2
Another Dice Game 136 84 62% 0.00 83 70 84% 4.5